Prelim Examination Flashcards
It is a digital medical image that stored on a medium to allow quick access until the examination results are reviewed by a radiologist or other physician.
PACS
A networked software system for managing medical imagery and associated data.
RIS
A standard method of image storage for diagnostic medical images developed by the American College of Radiology (ACR) along with the National Electrical Manufacturers Association (NEMA).
DICOM
The practice in which radiologists remotely read examination results and write report.
Teleradiology
It is the earliest calculating tool invented by the Ancient Romans.
Abacus
He was hired by the US Bureau of Census to design a tabulating machine to record census data.
Herman Hollerith
A machine that has a function to decipher or crack secret German military codes during World War II.
Colossus
They developed UNIVAC (UNIVersal Automatic Computer), the first commercially successful general-purpose, stored program electronic digital computer.
Eckert and Mauchly
He invented a machine called pascaline.
Blaise Pascal
It refers to any general-purpose, stored-program electronic digital computer.
Computer
It contains a computer chip and indicates time with numbers. It has only two values that vary discretely through coding.
Digital
The largest circuitry board inside the computer, and it contains many important small components to make the computer function properly.
Motherboard
It is used to store data that needs to be accessed frequently or for a long period of time.
Storage
It is the physical component of computer. Some of its examples are motherboard, CPU, mouse, and keyboard.
Hardware
It delivers all electricity to the PC and contains a fan to help keep the inside of the computer cool.
Power Supply
It uses a liquid crystal display to generate an image on the screen
LCD Monitor
The zero or one in the binary system is called
Bit
Which of the following computer measures is the largest?
Word
It comes from the Latin for “finger” or “toe”.
Digit
Any of the discrete elements comprising a three dimensional entity.
Voxel
What is the imaging plate made from?
Photostimulable Phosphor
What is the process of computed radiography?
A. Patient details and selected examination put into computer system
B. During exposure, IP traps x-rays and stores them as energy in phosphor later to produce latent image on plate
Cassette placed in processor
D. All of the above (correct answer)
Cassette-Based system that uses a photostimulable storage phosphor image plate (PSP or IP).
Computed Radiography (CR)
LASER stands for:
Light Amplification by Stimulated Emission of Radiation
A light detector of choice for CR
Photodiode
It converts a light pulse into an electrical signal of
measurable magnitude.
Photostimulable Tube
It is the ability to emit visible light.
Luminescence
It is the emission of visible light during stimulation.
Fluorescence
It is the emission of visible light during and after stimulation.
Phosphorescence
This layer “traps” the electrons during and after stimulation.
Phosphor Layer
A semi-rigid material that gives the imaging sheet some strength.
Support Layer
A type of digital imaging that is fast and allows the image to come up on the monitor straight from the detector without the use of a processor or plate reader.
DR
It is determined by the number of bits used to define each pixel.
Bit Depth
It is a two-step process: x-ray photons are converted to light, and then the light photons are converted to an electrical signal.
Indirect Conversion
It is the ability of the CCD to respond to a wide range of light intensity, from very dim to very bright.
Dynamic Range
The dynamic range of a typical digital radiography is:
16,384
It keeps the laser beam at a constant size, shape, speed, and intensity.
The Beam Shaping Optics
Of all radiographic imaging systems, contrast resolution.
Computed Tomography
DQE stands for:
Detective Quantum Efficiency
How efficiently a system converts the x-ray input signal into a useful output image is known as
DQE
